The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 19, 1991
Filed:
Jun. 29, 1990
Applicant:
Inventor:
Reagan Houston, Hendersonville, NC (US);
Assignee:
Salem Industries, Inc., South Lyon, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251306 ; 13724622 ;
Abstract
A valve comprising a circular butterfly that is rotatable about an axis extending diametrically of a cylindrical valve housing. The butterfly has two axially spaced seal surfaces on the periphery thereof that, in conjunction with complementary axially spaced seats on the valve housing, control the flow of air to or from an annular plenum that surrounds the valve housing.